Ore-concentrator



(No Model.) 3 sheets-sheet 1. L. R. TULLOCH. ORE GDNGENTRATOR.

No. 583,519. Patented June l, 1897.

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Patented June 1,1897.

(No Model.) 3 sheets-sheet 3. L. R. TULLOGH.

URE GONGENTRATOR. No. 583,519. Patented June 1,1897.

UNITED STATES PATENT OFFICE.

LOUIS R.' TULLOCH, OF ANGELS CAMP, CALIFORNIA.

ORE-CONCENTRATOR.

SPECIFICATION forming part of Letters Patent N o. 583,519, dated J une 1, 1897.

` Application filed 3'11116 16, 1896. Serial No. 595,802. (No model.)

To all whom it may concern,.-

Be it known that I, Louis R. TULLocH, a citizen of the United States, residing at Angels Camp, in the county of Calaveras and State of California, have invented certain new and useful Improvements in Ore-Concentrators; and I do hereby declare that the following is a full, clear, and exact description thereof.

The present invention relates to a certain new and useful ore-concentrator of that class wherein the ore or pulp is received and concentrated upon an endless traveling belt; and it consists in the arrangement of parts and details of construction as will be hereinafter y fully set forth in the drawings and described and pointed out in the specification.

In order to fully comprehend the invention, reference must be had to the accompanying sheets of drawings, forming a part of this application, wherein- Figure l is a side view in elevation, partly broken away, of the concentrator. Fig. 2 is a top plan view of the same. Fig. 3 isa front view in elevation; and Fig. 4 is a cross-sectional view in elevation, taken on line so Fig. l, and viewed in the direction of the arrow.

In the drawings the fixed or supporting frame of the machine is shown as consisting of the longitudinal sills a, cross or end pieces a', and the uprights l, 2, 3, and 4. The uprights 1 and 4 are connected by the longitudinal piece 5 and the uprights 2 and 4 by the longitudinal piece 6, Fig. 2. In the present machine I have shown the swinging frame A as being suspended between the uprights l, 2, 3, and 4 at its corners by means of the elastic links or straps A'. These links or straps are connected at their lower ends to the bottom or side of the swinging frame, one at each end thereof. The upper end of the links or straps is made round and screwthreaded and passes through an opening in the brackets A2, secured to and projecting from each upright, Figs. l and 3, and said links or strapsare held in place by the nut a2. By tightening or loosening these nuts the swinging frame of the concentrator is raised or lowered.

The endless concentrating-belt B travels over end rollers B B2, which rollers work in bearing-boxes .secured at each end of the movable orswinging frame A. rlhis movable or swinging frame is so hung that the endless concentrating-belt travels at a gradual incline from the. rear end roller B2 to the forward end roller B. In order to prevent the sagging of the concentrating-belt between the end rollers, a series of small rollers B3 are journaled in the movable or swinging frame.

Near the forward end of the concentrator, below the frame A, is located the usual recei ving-tank C, within which is suspended the roll C', over which the endless belt travels as carried to the rear roller B2. The belt also travels over the idler C2, secured to the bottom of the swinging or movable frame A, between the roller C and the roller B2, Fig. l.

To one side of the fixed or supporting frame is placed the drive-shaftD, which shaft is run parallel to the movable or swinging frame and works in bearing-boxes b b', secured to the outer face of the uprights l and 4 of the fixed frame. Upon the rear end of the shaft D is secured the belt-wheel D', over which works the drive-belt, (not shown,) which belt is operated by any suitable mechanism. Upon the shaft D, near its center, is fastened the eccentric cam D2. This eccentric cam is straddled by the bifurcated lower end portion of the arm D3, which arm is fulcrumed to the longitudinal piece 5. The upper end of the fulcrumed arm D3 is connected to the swinging or movable frame A by the rod or strap D4. Consequently it is obvious that as the arm is thrown in and out during the rotary movement of the eccentric cam D2'the swinging or movable frame will have a lateral or side shake or movement given'thereto. To the forward end of the drive-shaft D is secured the belt-wheel E, which is connected with the belt-wheel E', secured to one end of the cross-shaft E2 by the belt E2. By means of this belt the motion of the drive-shaft D is transmitted to the cross-shaft E2, said belt being prevented from lateral displacement by means of the keeper-roll E4, secured'to the bracket b2, projecting from the upright l, Fig. l. The cross-shaft E2 works in bearing- IOD boxes secured to the bottom of the swinging or movable frame near its forward end. To the projecting end of the cross-shaft E2 opposite to that carrying the belt-wheel E is secured the belt-wheel F, which is connected by means of a suitable belt to the belt-wheel F, secured to the projecting end of the shaft of the roll B. The motion of the cross-shaft E2 is thus transmitted to the roll B in orderA to drive or impart movement to the endless concentrating-belt l5.

Above the swinging or movable frame A is located the bumping table or frame F2, which is connected to the swinging frame and supported by means of the straps F3 F4. These supporting straps are so connected to the swinging table and bumping-frame as to permit of the said bumping table or frame being freely moved back and forth. The forward end of the bumping table or frame is secured to the straps F3 by means of the set-screws CZ, which pass through elongated slots d', cut in the upper end of the said straps. By loosening the set-screws the forward end of the bumping table 01' frame may be raised or lowered in order to adjust the inclination thereof. To the forward cross-piece of the bumping frame or table are secured the buffers cl2, which strike against or contact with the buffers d3, secured to the standards G, upwardly projecting from the swinging or movable frame A, Fig. l. This bumping table or frame is thrown backward by means of the cams G', secured to the cross-shaft E2 between the beltwheels E and F and the frame of the swinging or movable frame. As these cams are carried around by the rotary movement of the crossshaft E2 they engage the arms G2, downwardly projecting from the bumper frame or table, and force the said frame or table backward. The moment the cams move beyond the depending arms G2 the bumping frame or table is thrown forward with considerable force by means of the curved springs G2, which form connection between the rear end of the bumping frame or table and the swinging frame A. Within the bumping frame or table is secured the plate fand above this plate the smaller plate f. The ore or pulp is fed upon the upper plate f', and by the jolt given to the said frame or table it is scattered thereover and graduallyV works from said plate onto the plate f, from which it makes its escape at each end onto the traveling concentratingbelt. The object of the bumping-table is to separate the ore or pulp and free the same of as much foreign matter as possible before permitting the same to be delivered upon the concentrating-belt. By means of this bum ping frame or table considerable work is saved the concentrating-belt.

At the front end of the swinging or movable frame above the endless traveling belt is located the water-distributer G4, which distributes water upon the concentrating-belt, and above the bumping frame or table is located the water-distributer G5, which distributes its water upon the plates of the bumping-table. Tater is supplied to these distributers in the usual manner.

Above the bumping frame or table and the swinging or movable frameA is located the ore feed-box H. This boX is supported by means of the straps, links, or standards H H2, fulcru med to the swinging or movable frame A. The ore feed-box is arranged at a downward incline and its forward end comes directly over the upper plate of the bumping table or frame. The lower end of the supporting straps, links, or standards H projects below the swinging or movable frame, and said standards are connected by means of the cross-piece H3. This cross-piece is connected by the rod H4 to an eccentric cam I, secured upon the cross-shaft E2 below the swinging frame or table A, Fig. l. Consequently as the said cross-shaft is rotated the eccentric cam throws the connecting-rod H4 forward and backwarchwhich through its connections imparts a longitudinal reciprocating motion to the ore feed-box.

The ore feed-box is provided with an upper and a lower ore-receiving plate I I2, upon which plates the ore or pulp from the stampbattery is received. As the ore or pulp is conveyed downward over these plates toward the discharge end of the ore-box the reciprocating movement imparted to the said box by the hereinbefore-described mechanism causes a separation of the ore or pulp. In each plate I I2, near its lower end, is cut a cross-slot I2, through which slots the heavier or more precious particles of the ore or pulp will flow as the separated pulp reaches this portion of the plates. The ore or pulp flowing through these slots falls upon the platforms I4, located beneath the plates I l2, and iiows from said platforms onto the bumping table or frame.

The lighter or waste portion of the ore or pulpl carried past the slotted portion of the plates I l2 liows into the troughs K K', secured to the ore feed-box below the discharge end of the plates I 12 for the purpose of receiving this waste. This portion of the pulp is conveyed by the water carried therewith through the pipe K2 to what I term a settling vessel, box, or receptacle, secured to the swinging or movable frame A near the lower end thereof. This settling vessel, boX, or receptacle consists of the frame K3, within which are secured two plates L L. These plates are double-V shaped and are located one above the other, so as to leave a zigzag passage-way therebetween. The pipe or hose carrying the waste pulp from the receiving-troughs of the ore feed-box communicates with the forward end of the zigzag passage-way and the waste pulp is discharged therein. As the waste pulp is conveyed through the irregular passage-way just described by the water carried therewith the sand and the heavier material will settle in the lower bends of the bottom plate L, while the water will low through the said passage-way and be discharged upon lOO IIO

the concentrating-belt near its lower end. In the lower bends of the bottom plate is cut a series of discharge-openings Z, through which openings the sand and the heavier material settled in the lower bends of said plate L escape uponthe bottom L2 of the frame K3, from which bottom the said material flows onto the concentrator-belt in advance of the settling-box. By means of this settling-box any of the precious metal carried by the waste from the ore feedbox is recovered. The plates forming the irregular passage-way for the waste pulp may be corrugated or of any other shape desired; but I prefer the shape shown.

Having thus described my invention, what I claim as new, and desire to secure protection in by Letters Patent, is-

1. In an ore-concentrator, the combination with the movable frame and the endless traveling concentrating-belt, of the bumping table or frame mounted thereabove and carried by the frame, and of mechanism for imparting a longitudinal reciprocating movement to the bumping table or frame.

2. In an ore-concentrator, the combination with the swinging frame, of mechanism for imparting motion thereto, the endless concentratin g belt traveling over the swinging frame, the bumping table or frame mounted on and located above the swinging frame, and of mechanism for imparting a longitudinal reciprocating movement to the bumping table or frame.

3. In an ore-concentrator, the combination with an endless traveling ore-concentrating belt, of mechanism for driving the same, of a bumping table or frame mounted above the traveling belt, an ore feed-box which supplies pulp or ore to the bumping table or frame,

and of mechanism for imparting a longitudi-A nal reciprocating motion both to the bumping table or frame and the ore feed-box.

4. In an ore-concentrator, the combination with an endless traveling ore-concentrating belt, of a swinging frame over which said belt travels, mechanism for imparting mot-ion to said frame,the bumping table or frame mounted upon said swinging frame above the endless traveling belt, the ore feed-box mounted upon said swinging frame so as to discharge its pulp onto the bumping table or frame, and of mechanism for imparting a horizontal longitudinal movement both to the bumping table or frame and the ore feed-box.

5. In an ore-concentrator,the combination withthe endless traveling belt, the bumping frame or table, the shaking ore feed-box,

'means for conducting the ore from the box to the table, the settling vessel for receiving the waste pulp from the ore feed-box', and of mechanism for imparting a longitudinal reciprocating movement to the bumping table or frame and the ore feed-box.

6. In an ore-concentrator, the combination with an endless traveling belt, of a shaking ore feed-box, a settling vessel, box or receptacle for receiving the waste from the ore feed-box located near the lower end of the belt-carrying frame, a connection between said settling device and the ore feed-box, a pair of plates secured in said settlingdevice so as to form an irregular passage-way therebetween, discharge openings in the lower plate through which the sand and the heavier material escape, and means for conducting the discharge from the openings forward.

'7. In an ore-concentrator, the combination with an endless concentrating-belt, of a shaking ore feed-box mounted thereabove, discharge-openings in said ore feed-box through which the pulp iiows, a settling device mounted above the concentrating-belt, and of connection between the ore feed-box and the settling device by means of which the waste pulp is conveyed to the settling device.

S. In an ore-concentrator, the combination with an endless travelingconcentrating-belt, 'of a settling device, mounted above the concentratin g-belt, which receives the waste pulp and settles the same in order to recover any precious metal contained therein and discharge-openin gs in the settling device through which the separated pulp escapes upon the endless traveling concentrating-belt.

9. In an ore-concentrator, the combination with a movable frame, and a concentratingbelt, an ore feed-box loosely supported on the frame, a bumping-box loosely supported on the frame, means for moving the frame, and means actuated by same moving means for moving the boxes longitudinally.

In testimony whereof I affix my signature, in presence of two witnesses, this 26th day of May, 1896.

LOUIS R. TULLOCH.

Witnesses:

R. RAsMUssEN, C. H. Woon.

IOC 

